Error Log not generated in Test Execute after update to TC8

We recently updated to TC8.0 and have had several issues.  One being when we run our Suites or a single test in Test Execute, after the test has completed it's run it says that it is building the Log File but one never appears.  If you try to open it, you receive an error that it cannot create Bitmap File??  Then Test Execute gets shut down (kicked out).  We have disabled the Visualizer feature in our Suites and we are not using Keyword Testing.  Thanks for any help you can provide!!